#5597EC
Closest named color: Chefchaouen Blue (#4895EF). oklch(67.1% 0.144 255.6), rgb(85, 151, 236).
Aa
Black text reads best on this color (7.02:1).
About this color
#5597EC is a medium-light, vivid blue. In OKLCH its lightness is 67%, its chroma 0.144 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.014 away. Black text reads best on it, at 7.02:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.144) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.02:1 |
| White text | 2.98:1 |
Values
| HEX | #5597EC |
| RGB | rgb(85, 151, 236) |
| HSL | hsl(214, 80%, 63%) |
| OKLCH | oklch(67.1% 0.144 255.6) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #5597EC | 2.98:1 | Fails | Lc -61.6 | Content text, not long reading |
| Black text on #5597EC | 7.02:1 | AAA | Lc 47.8 | Large or bold text, headings |
| #5597EC text on white | 2.98:1 | Fails | Lc 56.3 | Large or bold text, headings |
| #5597EC text on black | 7.02:1 | AAA | Lc -45.5 | Large or bold text, headings |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 400.
-
Step 50
50
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DFEBFC
oklch(93.6% 0.026 257)
-
Step 200
200
#C4DBFA
oklch(88.4% 0.05 255.9)
-
Step 300
300
#9AC4FA
oklch(81% 0.089 255)
-
Step 400
400 (this color)
#5597EC
oklch(67.1% 0.144 255.6)
-
Step 500
500
#2C88F5
oklch(63.1% 0.184 255.5)
-
Step 600
600
#0070DD
oklch(55.6% 0.187 255.6)
-
Step 700
700
#005EBB
oklch(49.1% 0.165 255.5)
-
Step 800
800
#004C9B
oklch(42.6% 0.144 255.8)
-
Step 900
900
#07407F
oklch(37.7% 0.12 255.6)
-
Step 950
950
#08264A
oklch(26.9% 0.075 255.4)
#5597EC with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #729DEF | 0.036 |
| Deuteranopia (no green cones) | #5D8FEA | 0.021 |
| Tritanopia (no blue cones) | #00ABB6 | 0.118 |
| Achromatopsia (no color) | #959595 | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5597EC
#5597EC
oklch(67.1% 0.144 255.6)
- #C78700
#C78700
oklch(67.1% 0.141 75.4)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #5597EC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.014
- Cornflower Blue #6495ED ΔE 0.015
- Dark Sky Blue #448EE4 ΔE 0.032
- Soft Blue #6488EA ΔE 0.040
- Dodger Blue #1E90FF ΔE 0.051
- Perrywinkle #8F8CE7 ΔE 0.069
- Periwinkle Blue #8F99FB ΔE 0.071
- Faded Blue #658CBB ΔE 0.073
Use #5597EC in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.